Adding item to Eclipse text viewer context menu

Question

I am developing a plugin for eclipse. In this plugin I need to be able to add an item to the context menu in the text editor. So far I have been unsuccessful in this, does a

Answer 1

Regarding the selection part, the question "Replace selected code from eclipse editor thru plugin comand" is quite adequate for your need:

try {               
    IEditorPart part = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActiveEditor();
    if ( part instanceof ITextEditor ) {
        final ITextEditor editor = (ITextEditor)part;
        IDocumentProvider prov = editor.getDocumentProvider();
        IDocument doc = prov.getDocument( editor.getEditorInput() );
        ISelection sel = editor.getSelectionProvider().getSelection();
        if ( sel instanceof TextSelection ) {

            // Here is your String
            final TextSelection textSel = (TextSelection)sel;

        }
    }
} catch ( Exception ex ) {
    ex.printStackTrace();
}

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You can then link this selection with the addition of an item in the popup menu, as in this SO question:
"How do you contribute a command to an editor context menu in Eclipse"